Unfortunately, the guide is missing some critical details about the plywood type in question. Like what kind of wood this refers to. It’s like telling you the 3D print settings for thermoplastics without mentioning whether this applies to PVC, PLA or PEEK for example. In this case it is probably safe to assume that they refer to balsa. You can find some more details for laser wood cutting in general here. You may also find some hints in this thread.
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